%0 Journal Article %A Joachim Toft %T Wave front set for positive operators and for positive elements in non-commutative convolution algebras %J Studia Mathematica %D 2007 %P 63-80 %V 179 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm179-1-6/ %R 10.4064/sm179-1-6 %G en %F 10_4064_sm179_1_6